Across
- 4. earths crust located under the ocean
- 7. A weak spot in the crust where magma has come to the surface.
- 8. The process that creates new sea floor as plates move away from each other at the mid-ocean ridges.
- 9. hypothesis that says continents look like they fit together like a puzzle; Ancient Fossils of the same land animals have been found on different continents across oceans; glacier evidence shows that the continents have drifted; Age of the rock on the ocean floor shows that the sea floor is spreading.
- 11. Sections of the Earth's crust that move due to convection currents.
- 14. Earth's outermost layer.
- 15. The layer of hot, solid material between Earth's crust and core.
Down
- 1. A deep valley that forms where two plates move apart.
- 2. divergent boundary in the middle of the Atlantic Ocean where sea floor spreading occurs.
- 3. the movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another.
- 5. a tectonic plate boundary where two plates collide, come together, or crash into each other; Can cause mountain building or abduction depending on converging plate types; folded mountains.
- 6. An area where magma from deep within the mantle melts through the crust above it.
- 10. Plate Boundary formed between two tectonic plates as they separate and move apart at this border; forms a rift valley or mid-ocean ridge.
- 12. A super continent containing all of Earth's land that existed about 225 million years ago.
- 13. A plate boundary where two plates move past each other in opposite directions and increases risk of earthquakes.